George Castle is the former Director of London Crown Prosecution Service. Castle ran his office with an iron hand, keeping the pressure on James Steel and Alesha Phillips, of whom he was fiercely protective. His office is respite for Steel and Phillips from the front lines of the legal wars with the defense. George is fiercely protective of Phillips and Steel but he'll always make the tough decision when necessary. He can cut to the heart of a case in seconds and is always able to put a counter-argument to whatever position someone else is taking.